{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "84fcd9449fd7882ddfb05ba64d75f9be2d29b2e9"
            },
            {
              "fixed": "19aa416eed9e4aaf1bbe8da0f7bd9a9be31158c8"
            },
            {
              "fixed": "b7c7a275447c6d4bf4a36a134682e2e4e20efd4b"
            },
            {
              "fixed": "64dcbde7f8f870a4f2d9daf24ffb06f9748b5dd3"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.20"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31395.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnxt_en: fix OOB access in DBG_BUF_PRODUCER async event handler\n\nThe ASYNC_EVENT_CMPL_EVENT_ID_DBG_BUF_PRODUCER handler in\nbnxt_async_event_process() uses a firmware-supplied 'type' field\ndirectly as an index into bp-\u003ebs_trace[] without bounds validation.\n\nThe 'type' field is a 16-bit value extracted from DMA-mapped completion\nring memory that the NIC writes directly to host RAM. A malicious or\ncompromised NIC can supply any value from 0 to 65535, causing an\nout-of-bounds access into kernel heap memory.\n\nThe bnxt_bs_trace_check_wrap() call then dereferences bs_trace-\u003emagic_byte\nand writes to bs_trace-\u003elast_offset and bs_trace-\u003ewrapped, leading to\nkernel memory corruption or a crash.\n\nFix by adding a bounds check and defining BNXT_TRACE_MAX as\nDBG_LOG_BUFFER_FLUSH_REQ_TYPE_ERR_QPC_TRACE + 1 to cover all currently\ndefined firmware trace types (0x0 through 0xc).",
  "id": "CVE-2026-31395",
  "modified": "2026-07-15T01:48:58.619759027Z",
  "published": "2026-04-03T15:15:59.590Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/19aa416eed9e4aaf1bbe8da0f7bd9a9be31158c8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64dcbde7f8f870a4f2d9daf24ffb06f9748b5dd3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b7c7a275447c6d4bf4a36a134682e2e4e20efd4b"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31395.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31395"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "bnxt_en: fix OOB access in DBG_BUF_PRODUCER async event handler"
}